Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2017-03-10 — TX
Operator
Atmos Energy Corporation - Mid-Tex
Cause
Excavation Issue
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$19,095
Incident datetime
2017-03-10 14:39
Report number
Location
TX, DALLAS
Narrative
At 2:39 pm on march 10, 2017, atmos energy was notified by dallas fire & rescue (dfr) of an event in the 2100 block of main st. In dallas. Atmos energy's first responders arrived on-site at 3:20 pm discovering a third party damage and gas ignition had occurred on a 6" poly main struck by a truck-mounted auger northwest of the intersection of main street and cesar chavez boulevard. Atmos energy personnel eliminated gas flow to the damaged section of pipe - isolation points were identified and located, and the valves were closed at 4:09 pm. All of the roads except the 2100 block of main street were reopened. As a result of the main isolation, two commercial services were temporarily interrupted. Gas flow was reinstated at 12:20 am (march11th) allowing the interrupted services to be restored. Approximately 29 yards of main was deactivated as a result of the incident. The 2100 block of main street was reopened upon completion of the deactivation. First responders were notified by dallas fire & rescue that approximately 25 people were evacuated from the addresses of 2121 main st. And 2108 main st. An area surrounding the location of the incident was cordoned off, from US 75 to pearl street to pacific avenue to jackson street. This 6" poly main had been installed and had been placed in service on february 27, 2017. The contractors on atmos energy's project and the city of dallas' project were working simultaneously in the same area in the months leading up to the incident. Atmos energy followed it approved procedures, in compliance with part 192.603(b), to record this new asset in the gis electronic mapping system used by its locators. Due to the time it takes to complete this process, this asset was not reflected in the electronic mapping at the time the locate ticket was completed in this area on march 3, 2017. As a result, the new asset was not marked with the locate ticket. However, there were existing visual indicators in place, including a fresh ditch line covered with new asphalt in-line with the point of damage; visible and yellow painted gas valve boxes on main street 15 yards from the point of damage; and a large capacity meter in the alley for 2121 main street. Because the third-party contractor had an obligation per 18 tac 18.4 to make a visual check for any unmarked underground pipelines, including but not limited to above-ground pipeline valves, meter sets, and other visual markings, the primary cause that led to the incident was determined to be insufficient excavation practices. A project to replace the deactivated main was completed on august 16, 2017.
Detailed record list
Occurred At
2017-03-10 14:39:00
Year
2017
Report Received Date
2017-04-07 00:00:00
Iyear
2017.0
Report Number
20170033.0
Supplemental Number
32424.0
Report Type
Supplemental Final
Operator Id
31348
Name
Atmos Energy Corporation - Mid-Tex
Operator Street Address
5420 Lbj Freeway Suite 1800
Operator City Name
Dallas
Operator State Abbreviation
TX
Operator Postal Code
75240
Local Datetime
2017-03-10 14:39:00
Location Street Address
2121 Main St.
Location City Name
Dallas
Location County Name
Dallas
Location State Abbreviation
TX
Location Postal Code
75201
Location Latitude
32.78189
Location Longitude
-96.79212
Nrc Rpt Datetime
2017-03-10 16:07:00
Nrc Rpt Num
1172951
Commodity Released Type
Natural Gas
Unintentional Release
105.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
Yes
Explode Ind
No
Num Pub Evacuated
25.0
Incident Identified Datetime
2017-03-10 14:39:00
On Site Datetime
2017-03-10 15:20:00
Federal
No
Location Type
Public Property
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
54.0
Crossing
No
Pipe Facility Type
Privately Owned
System Part Involved
Main
Installation Year
2017.0
Pipe Diameter
6.0
Pipe Specification
Hdpe
Pipe Manufacturer
Performance Pipe
Material Involved
Plastic
Plastic Type
Polyethylene (Pe)
Plastic Sdr
11
Material Pe Pipe Code
3408
Release Type
Mechanical Puncture
Puncture Axial
5.0
Puncture Circum
4.0
Class Location Type
Class 4 Location
Est Cost Oper Paid
700000.0
Est Cost Prop Damage
19095.0
Est Cost Emergency
7625.0
Est Cost Other
0.0
Est Cost Unintentional Release
588.0
Prpty
727308.0
Commercial Affected
2.0
Industrial Affected
0.0
Residences Affected
0.0
Accident Psig
23.0
Normal Psig
23.0
Mop Psig
55.0
Accident Pressure
Pressure Did Not Exceed Maop
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
No
Scada Conf Ind
No
Accident Identifier
Notification From Emergency Responder
Investigation Status
No, the operator did not find that an investigation of the controller(s) actions or control room issues was necessary due to: (provide an explanation for why the operator did not investigate)
Investigation Status Details
3rd party damage
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Excavation Damage
Cause Details
Excavation Damage By Third Party
Ex Party Type
Excavation Damage By Third Party
Prior Notification Ind
Yes
One Call System Ind
Yes
Notify Cga Dirt
No
Public Row Ind
Yes
Public Subtype
City Street
Excavator Type
Contractor
Excavator Equipment
Auger
Work Performed
Traffic Signal
One Call Notified Ind
Yes
One Call Ticket Num
1756101500
One Call Center Name
Texas 811
Locator Type
Contract Locator
Visible Marks
No
Service Interruption
Yes
Service Interruption Hours
8.0
Root Cause Category
Excavation Issue
Root Cause Type
Improper Backfilling Practices
Preparer Name
T**** L*****
Preparer Title
Compliance Supervisor
Preparer Email
T***********@a**********.com
Preparer Telephone
214-426-7037
Preparer Fax
214-426-7081
Authorizer Name
M**** S*****
Authorizer Title
Vice President Technical Services
Authorizer Telephone
214-206-2033
Authorizer Email
M***********@a**********.com
Narrative
At 2:39 pm on march 10, 2017, atmos energy was notified by dallas fire & rescue (dfr) of an event in the 2100 block of main st. In dallas. Atmos energy's first responders arrived on-site at 3:20 pm discovering a third party damage and gas ignition had occurred on a 6" poly main struck by a truck-mounted auger northwest of the intersection of main street and cesar chavez boulevard. Atmos energy personnel eliminated gas flow to the damaged section of pipe - isolation points were identified and located, and the valves were closed at 4:09 pm. All of the roads except the 2100 block of main street were reopened. As a result of the main isolation, two commercial services were temporarily interrupted. Gas flow was reinstated at 12:20 am (march11th) allowing the interrupted services to be restored. Approximately 29 yards of main was deactivated as a result of the incident. The 2100 block of main street was reopened upon completion of the deactivation. First responders were notified by dallas fire & rescue that approximately 25 people were evacuated from the addresses of 2121 main st. And 2108 main st. An area surrounding the location of the incident was cordoned off, from US 75 to pearl street to pacific avenue to jackson street. This 6" poly main had been installed and had been placed in service on february 27, 2017. The contractors on atmos energy's project and the city of dallas' project were working simultaneously in the same area in the months leading up to the incident. Atmos energy followed it approved procedures, in compliance with part 192.603(b), to record this new asset in the gis electronic mapping system used by its locators. Due to the time it takes to complete this process, this asset was not reflected in the electronic mapping at the time the locate ticket was completed in this area on march 3, 2017. As a result, the new asset was not marked with the locate ticket. However, there were existing visual indicators in place, including a fresh ditch line covered with new asphalt in-line with the point of damage; visible and yellow painted gas valve boxes on main street 15 yards from the point of damage; and a large capacity meter in the alley for 2121 main street. Because the third-party contractor had an obligation per 18 tac 18.4 to make a visual check for any unmarked underground pipelines, including but not limited to above-ground pipeline valves, meter sets, and other visual markings, the primary cause that led to the incident was determined to be insufficient excavation practices. A project to replace the deactivated main was completed on august 16, 2017.
| Occurred At | 2017-03-10 14:39:00 |
|---|---|
| Year | 2017 |
| Report Received Date | 2017-04-07 00:00:00 |
| Iyear | 2017.0 |
| Report Number | 20170033.0 |
| Supplemental Number | 32424.0 |
| Report Type | Supplemental Final |
| Operator Id | 31348 PHMSA Enforcement |
| Name | Atmos Energy Corporation - Mid-Tex |
| Operator Street Address | 5420 Lbj Freeway Suite 1800 |
| Operator City Name | Dallas |
| Operator State Abbreviation | TX |
| Operator Postal Code | 75240 |
| Local Datetime | 2017-03-10 14:39:00 |
| Location Street Address | 2121 Main St. |
| Location City Name | Dallas |
| Location County Name | Dallas |
| Location State Abbreviation | TX |
| Location Postal Code | 75201 |
| Location Latitude | 32.78189 Google Maps OpenStreetMap |
| Location Longitude | -96.79212 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2017-03-10 16:07:00 |
| Nrc Rpt Num | 1172951 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 105.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | Yes |
| Explode Ind | No |
| Num Pub Evacuated | 25.0 |
| Incident Identified Datetime | 2017-03-10 14:39:00 |
| On Site Datetime | 2017-03-10 15:20:00 |
| Federal | No |
| Location Type | Public Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 54.0 |
| Crossing | No |
| Pipe Facility Type | Privately Owned |
| System Part Involved | Main |
| Installation Year | 2017.0 |
| Pipe Diameter | 6.0 |
| Pipe Specification | Hdpe |
| Pipe Manufacturer | Performance Pipe |
| Material Involved | Plastic |
| Plastic Type | Polyethylene (Pe) |
| Plastic Sdr | 11 |
| Material Pe Pipe Code | 3408 |
| Release Type | Mechanical Puncture |
| Puncture Axial | 5.0 |
| Puncture Circum | 4.0 |
| Class Location Type | Class 4 Location |
| Est Cost Oper Paid | 700000.0 |
| Est Cost Prop Damage | 19095.0 |
| Est Cost Emergency | 7625.0 |
| Est Cost Other | 0.0 |
| Est Cost Unintentional Release | 588.0 |
| Prpty | 727308.0 |
| Commercial Affected | 2.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Accident Psig | 23.0 |
| Normal Psig | 23.0 |
| Mop Psig | 55.0 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | No |
| Scada Conf Ind | No |
| Accident Identifier | Notification From Emergency Responder |
| Investigation Status | No, the operator did not find that an investigation of the controller(s) actions or control room issues was necessary due to: (provide an explanation for why the operator did not investigate) |
| Investigation Status Details | 3rd party damage |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Excavation Damage |
| Cause Details | Excavation Damage By Third Party |
| Ex Party Type | Excavation Damage By Third Party |
| Prior Notification Ind | Yes |
| One Call System Ind | Yes |
| Notify Cga Dirt | No |
| Public Row Ind | Yes |
| Public Subtype | City Street |
| Excavator Type | Contractor |
| Excavator Equipment | Auger |
| Work Performed | Traffic Signal |
| One Call Notified Ind | Yes |
| One Call Ticket Num | 1756101500 |
| One Call Center Name | Texas 811 |
| Locator Type | Contract Locator |
| Visible Marks | No |
| Service Interruption | Yes |
| Service Interruption Hours | 8.0 |
| Root Cause Category | Excavation Issue |
| Root Cause Type | Improper Backfilling Practices |
| Preparer Name | T**** L***** |
| Preparer Title | Compliance Supervisor |
| Preparer Email | T***********@a**********.com |
| Preparer Telephone | 214-426-7037 |
| Preparer Fax | 214-426-7081 |
| Authorizer Name | M**** S***** |
| Authorizer Title | Vice President Technical Services |
| Authorizer Telephone | 214-206-2033 |
| Authorizer Email | M***********@a**********.com |
| Narrative | At 2:39 pm on march 10, 2017, atmos energy was notified by dallas fire & rescue (dfr) of an event in the 2100 block of main st. In dallas. Atmos energy's first responders arrived on-site at 3:20 pm discovering a third party damage and gas ignition had occurred on a 6" poly main struck by a truck-mounted auger northwest of the intersection of main street and cesar chavez boulevard. Atmos energy personnel eliminated gas flow to the damaged section of pipe - isolation points were identified and located, and the valves were closed at 4:09 pm. All of the roads except the 2100 block of main street were reopened. As a result of the main isolation, two commercial services were temporarily interrupted. Gas flow was reinstated at 12:20 am (march11th) allowing the interrupted services to be restored. Approximately 29 yards of main was deactivated as a result of the incident. The 2100 block of main street was reopened upon completion of the deactivation. First responders were notified by dallas fire & rescue that approximately 25 people were evacuated from the addresses of 2121 main st. And 2108 main st. An area surrounding the location of the incident was cordoned off, from US 75 to pearl street to pacific avenue to jackson street. This 6" poly main had been installed and had been placed in service on february 27, 2017. The contractors on atmos energy's project and the city of dallas' project were working simultaneously in the same area in the months leading up to the incident. Atmos energy followed it approved procedures, in compliance with part 192.603(b), to record this new asset in the gis electronic mapping system used by its locators. Due to the time it takes to complete this process, this asset was not reflected in the electronic mapping at the time the locate ticket was completed in this area on march 3, 2017. As a result, the new asset was not marked with the locate ticket. However, there were existing visual indicators in place, including a fresh ditch line covered with new asphalt in-line with the point of damage; visible and yellow painted gas valve boxes on main street 15 yards from the point of damage; and a large capacity meter in the alley for 2121 main street. Because the third-party contractor had an obligation per 18 tac 18.4 to make a visual check for any unmarked underground pipelines, including but not limited to above-ground pipeline valves, meter sets, and other visual markings, the primary cause that led to the incident was determined to be insufficient excavation practices. A project to replace the deactivated main was completed on august 16, 2017. |
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